The DMS rosette channel is one of the virtual channels in the Delphin measurement and data acquisition systems. It is used to calculate the complete strain state at a measurement point based on the measured values from a strain gauge rosette.
One DMS rosette (strain gauge rosette) It typically consists of three individual strain gauges arranged at different angles on the surface of a component. This allows multiple strains in different directions to be measured simultaneously at a single measurement point.
While individual strain gauges measure strain only in their respective directions, the strain gauge rosette channel uses mathematical transformations to calculate the complete two-dimensional strain state of the component from these measurements. To do this, the measured normal strains are correlated and analyzed.
Depending on the rosette geometry used, the following parameters, among others, can be determined:
- Principal strain 1 (ε₁)
- Principal strain 2 (ε₂)
- Principal directions of strain
- Shear strain
- Area expansion
- Relative strains for strength evaluations
The automatic calculation is performed directly within the Delphin measurement system via the virtual channel. This makes the calculated strain values immediately available for visualization, limit value monitoring, data logging, or further analysis.
Typical applications of the DMS Rosette channel:
- Stress and Strain Analyses of Components
- Material and Strength Testing
- Structural Monitoring of Machinery and Equipment
- Stress Analysis in Mechanical Engineering
- Test Bench and Testing Technology
- Research and development
Advantages of the DMS Rosette Channel:
- Automatic Calculation of Complex Strain States
- Direct evaluation within the measurement system
- No external post-processing required
- Rapid Analysis of Component Loads
- Ideal for test benches and structural mechanical testing
The DMS Rosette channel greatly simplifies the analysis of strain measurements and enables a precise assessment of loads, stresses, and material behavior in demanding measurement and testing applications.